CN103052084A - Intelligent antenna and wave beam adjustment method thereof - Google Patents
Intelligent antenna and wave beam adjustment method thereof Download PDFInfo
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Abstract
本发明公开了一种智能天线及其波束调整方法，用以解决高层建筑密集区域内的无线网络覆盖问题。所述智能天线包括多个纵向排列的横向阵元，每个阵元由多个排列在一条水平直线上且并联供电的振子组成，每个阵元连接一个信号放大器的输出通道；所述智能天线在水平方向上的波束宽度为30至150度，在垂直方向上的广播波束宽度为15至165度，在垂直方向上的业务波束宽度不超过20度。所述智能天线进行波束调整时，通过改变各阵元的激励信号的幅度和相位调整垂直方向上的波束宽度，通过改变阵元中各振子的激励信号的相位调整水平方向上的波束宽度。
The invention discloses an intelligent antenna and a beam adjusting method thereof, which are used to solve the problem of wireless network coverage in dense areas of high-rise buildings. The smart antenna includes a plurality of longitudinally arranged transverse array elements, each array element is composed of a plurality of oscillators arranged on a horizontal straight line and powered in parallel, and each array element is connected to an output channel of a signal amplifier; the smart antenna The beam width in the horizontal direction is 30 to 150 degrees, the broadcast beam width in the vertical direction is 15 to 165 degrees, and the business beam width in the vertical direction does not exceed 20 degrees. When the smart antenna performs beam adjustment, the beam width in the vertical direction is adjusted by changing the amplitude and phase of the excitation signal of each array element, and the beam width in the horizontal direction is adjusted by changing the phase of the excitation signal of each oscillator in the array element.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of smart antenna and wave beam method of adjustment thereof.
Background technology
The smart antenna that uses in the mobile communication wireless network belongs to many array-element antenna, the disposing way of array element and oscillator as shown in Figure 1 in the existing smart antenna, smart antenna comprises a plurality of transversely arranged vertical array elements, each array element is put by a plurality of axial tandems and the oscillator of parallel operation forms, each array element connects the output channel of an AP (signal amplifier), describes as an example of eight dual-four channel intelligent antennas example among Fig. 1.The traditional intelligence antenna in the horizontal direction with vertical direction on the wave beam field pattern see also Fig. 2, among Fig. 2 the right curve represent horizontal coverage, the curve of top represents vertical coverage.As can be seen from Figure 2, this smart antenna is narrow beam in vertical direction, and beamwidth only has 7 to 8 degree usually.
Smart antenna can be operated in two kinds of mode of operations: broadcast beam pattern and business beam pattern.Broadcast beam covers whole residential quarter, and all portable terminals are kept in touch with the base station all the time; Business beam is narrow beam (referring to horizontal direction), can be in the interscan of broadcast beam coverage, and its concentration of energy is also pointed to communication mobile terminal, can effectively reduce interference, the raising capacity.Fig. 3 and Fig. 4 are respectively traditional intelligence antenna broadcast beam field pattern and business beam field patterns in the horizontal direction.
In recent years, along with the raising of mobile subscriber's popularity rate, the mobile subscriber uses the occasion of the portable terminals such as mobile phone more and more wider.Progress at full speed along with urbanization, the intensive shopping centre of a large amount of skyscrapers and residential quarters have all appearred in many cities, existing mobile communication wireless network can not well cover the skyscraper close quarters, often run into when causing the mobile subscriber in the skyscraper close quarters, to use portable terminal wireless signal bad, can't connect or the situation such as speech quality is poor.
At present, in order to solve the wireless network covering problem in the skyscraper close quarters, the technical staff need to carry out a large amount of network optimization work, for example increases base station number or increases antenna amount, causes the network operation difficulty.Another kind of solution is that distribution antenna (being that multiple spot lays antenna) is installed in high-rise, by the covering of numerous ceiling mount antennas realizations to high-rise.The shortcoming of this scheme is to need the owner to cooperate in implementation process, and engineering construction and maintenance difficulties are large, and normal the appearance limited the phenomenon that can't construct because of the owner.
Summary of the invention
The embodiment of the invention provides a kind of smart antenna and wave beam method of adjustment thereof, in order to solve the wireless network covering problem in the skyscraper close quarters.
The smart antenna that the embodiment of the invention provides comprises the horizontal array element of a plurality of longitudinal arrangements, and each array element is arranged on the horizontal linear and the oscillator of parallel operation forms by a plurality of, and each array element connects the output channel of a signal amplifier; Described smart antenna beamwidth in the horizontal direction is 30 to 150 degree, and broadcast beam width in vertical direction is 15 to 165 degree, and business beam width in vertical direction is no more than 20 degree.
The wave beam method of adjustment of the above-mentioned smart antenna that the embodiment of the invention provides comprises:
The amplitude of the pumping signal by changing each array element and phase place are adjusted the beamwidth on the vertical direction, adjust beamwidth on the horizontal direction by the phase place that changes the pumping signal of each oscillator in the array element.
The smart antenna that the embodiment of the invention provides, a plurality of oscillators are arranged in the horizontal array element of composition on the horizontal linear, and with a plurality of horizontal array element longitudinal arrangements composition smart antennas, can realize the vertical scan direction of business beam, and be broad beam in the horizontal direction, thereby realized the good covering to high-rise, guaranteed the wireless telecommunications effect in the skyscraper close quarters.
The wave beam method of adjustment of the smart antenna that the embodiment of the invention provides, coverage in vertical direction is large and can adjust by the size and the phase place that change each array element pumping signal, coverage in the horizontal direction is large and can finely tune by the phase place that changes the pumping signal of oscillator in the array element, thereby can cover well the high-rise of different size and shapes.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of a part of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the disposing way schematic diagram of array element and oscillator in the traditional intelligence antenna;
Fig. 2 be the traditional intelligence antenna in the horizontal direction with vertical direction on the wave beam field pattern;
Fig. 3 is traditional intelligence antenna broadcast beam field pattern in the horizontal direction;
Fig. 4 is traditional intelligence antenna business beam field pattern in the horizontal direction;
Fig. 5 is that oscillator and the array element of smart antenna in the embodiment of the invention arranges schematic diagram;
Fig. 6 is the locus schematic diagram during smart antenna coverage goal high-rise in the embodiment of the invention;
Fig. 7 is that each array element of smart antenna receives electromagnetic wave path-difference schematic diagram in the embodiment of the invention;
Fig. 8 is the smart antenna model structure figure that has 4 row, 4 row oscillators in the embodiment of the invention;
Fig. 9 is the broadcast beam simulation result in vertical direction of smart antenna shown in Figure 8 in the embodiment of the invention;
Figure 10 is the business beam simulation result in vertical direction of smart antenna shown in Figure 8 in the embodiment of the invention;
Figure 11 is the wave path-difference schematic diagram of each oscillator emitting electromagnetic wave in the array element of smart antenna in the embodiment of the invention;
Figure 12 is the broadcast beam simulation result in the horizontal direction of smart antenna shown in Figure 8 in the embodiment of the invention;
Figure 13 is the business beam simulation result in the horizontal direction of smart antenna shown in Figure 8 in the embodiment of the invention;
Figure 14 adjusts schematic diagram with horizontal direction wave beam field pattern to cross direction in the embodiment of the invention;
Figure 15 adjusts schematic diagram with horizontal direction wave beam field pattern to narrow direction in the embodiment of the invention;
Figure 16 is used smart antenna model schematic diagram when studying broadcast beam horizontal direction width adjustment in the embodiment of the invention;
Figure 17 is the initial weight simulation result (before regulating) of the horizontal direction wave beam of smart antenna shown in Figure 13 in the embodiment of the invention;
Figure 18 is that the horizontal direction wave beam field pattern of smart antenna shown in Figure 13 in the embodiment of the invention is adjusted simulation result (Φ=15 degree) to cross direction;
Figure 19 is that the horizontal direction wave beam field pattern of smart antenna shown in Figure 13 in the embodiment of the invention is adjusted simulation result (Φ=15 degree) to narrow direction.
Embodiment
Below in conjunction with Figure of description the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein only is used for description and interpretation the present invention, be not intended to limit the present invention, and in the situation of not conflicting, embodiment and the feature among the embodiment among the present invention can make up mutually.
The embodiment of the invention provides the smart antenna that uses in a kind of mobile communication wireless network, in order to solve the wireless network covering problem in the skyscraper close quarters, realize that for accelerating the degree of depth wireless network covering of TD-SCDMA system and TD-LTE system provides the basis.
As shown in Figure 5, the smart antenna that the embodiment of the invention provides, the horizontal array element that comprises a plurality of longitudinal arrangements, each array element is arranged on the horizontal linear and the oscillator of parallel operation forms by a plurality of, and each array element connects the output channel of an AP (signal amplifier); This smart antenna beamwidth in the horizontal direction is 30 to 150 degree, and broadcast beam width in vertical direction is 15 to 165 degree, and business beam width in vertical direction is no more than 20 degree.
Better, the oscillator that forms array element adopts the perpendicular polarization oscillator, the oscillator of smart antenna keeps the vertical drive mode, not only be conducive to electromagnetic wave propagation at the earth's surface;on the face of the globe, but also be complementary with the mobile terminal antenna of mobile communication system and the direction of antenna for base station, satisfy simultaneously the time-multiplexed requirements such as TD-SCDMA system, TD-LTE system.Certainly, the oscillator that forms array element also can adopt dual polarization vibrator.
In the implementation, the element number of array of described smart antenna is greater than 0 less than 10, the oscillator number that each array element comprises equate and greater than 0 less than 10; The spacing of adjacent vibration generators is greater than 0 less than or equal to λ in the same array element, and better, the spacing value of adjacent vibration generators is λ/2 in the same array element; In the adjacent array element spacing of corresponding oscillator greater than 0 less than or equal to 2 λ; In the present specification, λ represents the wavelength of the wireless signal that smart antenna receives and launches.The element number of array of smart antenna is greater than 0 less than 10, and the value of line number N is less than 10 greater than 0 among corresponding Fig. 5; The oscillator number that each array element comprises equates and greater than 0 less than 10, the value of corresponding Fig. 5 midrange M is less than 10 greater than 0.
Generally, the back baffle plate that described smart antenna comprises, the back baffle plate is arranged on the rear portion of layered transducer elements, the spacing on back baffle plate and plane, layered transducer elements place greater than 0 less than λ, better, the spacing value on back baffle plate and plane, layered transducer elements place is λ/4; The size of back baffle plate surpasses the size of layered transducer elements, all leaves rich amount all around, and the affluence value of measuring that is to say between 0 to λ, the length at edge that the edge of back baffle plate exceeds layered transducer elements greater than 0 less than λ.
In order to guarantee the front and back ratio of smart antenna, usually around the back baffle plate, be provided with side plate, the width of side plate is greater than 0 less than λ, and the angle of side plate and back baffle plate is spent less than or equal to 90 greater than 0 degree.
In the embodiment of the invention, the wave beam method of adjustment of smart antenna comprises:
1) vertical direction adopts electricity adjustment
Pumping signal to each array element (laterally) is that input electrical signal arranges different weights, and described weights comprise amplitude and phase place, and physics realization is the electric current with out of phase.Can satisfy the covering demand of wide covering by the adjustment of weights; Simultaneously under business model, the adjustment by weights can become narrow beam, thereby reduces inter-user interference.
2) horizontal direction adopts machinery adjustment
Machinery adjustment belongs to the fine setting scope, and guaranteeing provides wider coverage to get final product.Physically, also realize the wave beam adjustment by the length that changes " transferring material ".
The smart antenna that the embodiment of the invention provides has kept two kinds of mode of operations of broadcast beam and business beam, and broadcast beam and business beam all refer to the wave beam field pattern on the vertical direction.This smart antenna can provide wider broadcast beam in vertical direction, thereby can improve the coverage effect of high-rise from the low layer to the high level, and can provide in vertical direction narrower business beam, business beam is used for tracking mobile terminal, thereby provides service for each layer mobile subscriber in the high-rise; This smart antenna can provide broad beam in the horizontal direction, thereby the horizontal direction that can guarantee high-rise covers requirement fully.
See also Fig. 6, the smart antenna that the embodiment of the invention provides can be installed on the building B on target high-rise A opposite, thereby target high-rise A is covered.Suggestion is installed in lower position with smart antenna, can reduce the electromagnetic pollution to environment.When adopting the smart antenna coverage goal high-rise that the embodiment of the invention provides, can select the suitable smart antenna of horizontal direction beamwidth according to the actual floor body width of this target high-rise, also can adopt the smart antenna with manual phase adjusting function, deflection and the beamwidth of smart antenna are adjusted to OK range, avoid too narrow the causing of wave beam to owe to cover or the wide interference that causes other residential quarters of wave beam.Have in the smart antenna of manual phase adjusting function, be provided with phase shifter between the output channel of the signal amplifier of each array element and this array element of driving.
According to the actual floor height of target high-rise and the installation site of smart antenna, adjust shape and the yawing moment of smart antenna broadcast beam field pattern in vertical direction, ensuring coverage effect, adjustment mode are to revise each array element pumping signal.Smart antenna receiver can be adjusted each array element pumping signal according to the floor at this portable terminal place behind the signal of portable terminal emission, make business beam point to this portable terminal, realizes the scanning of vertical direction.
The below introduces the vertical direction wave beam field pattern of the smart antenna that the embodiment of the invention provides and realizes principle.
The structure of the smart antenna that is provided by the embodiment of the invention as can be known, in case oscillator is fixed on the antenna-reflected plate, the relative position between the oscillator namely immobilizes, and that is to say, phase place and the amplitude relation of oscillator are determined in each array element.
Each array element connects the output channel of an AP, consists of the multi-channel intelligent antenna.The amplitude of each passage signal of telecommunication and phase place are independently, and the electromagnetic wave of smart antenna integral body is by the vector superposed result of each array element signal of telecommunication.
See also Fig. 7, in vertical direction, each array element can be considered with the behavior of similar oscillator.Stain among Fig. 7 represents array element, and array element is spread configuration from bottom to top, and nethermost array element is numbered 0, and successively serial number makes progress.As can be seen from Figure 7, the electromagnetic wave that a distant place is transmitted (can be considered plane wave), when arriving each array element on the spatial domain the distance of process different, take perpendicular to the incident direction on plane, layered transducer elements place as 0 degree direction, calculate clockwise the incident wave angle theta, each is numbered the array element incident wave and is respectively Δ dn with respect to the wave path-difference of No. 0 array element, and wherein, n represents the array element numbering, n=0,1,2,3...N, if the spacing of adjacent array element is λ/2, therefore, see also formula [1]:
Wherein, concrete numerical computations is as follows:
No. 1 array element incident wave is with respect to the wave path-difference of No. 0 array element:
No. 2 array element incident waves are with respect to the wave path-difference of No. 0 array element: Δ d2=λ sin θ;
No. 3 array element incident waves are with respect to the wave path-difference of No. 0 array element:
...
N array element incident wave is with respect to the wave path-difference of No. 0 array element:
The phase difference of incident wave is on the time domain: Δ dn (2 π/λ), wherein n=0,1,2,3...N.As seen, the difference of distance has caused the difference of phase of received signal on each array element on the space.Wireless signal through whole smart antenna receiver after the weighting arrives sees also formula [2]:
Wherein, A represents gain constant, s (t) expression complex envelope signal, W
nThe weighted factor of expression n array element, wherein n=0,1,2,3...N.According to the Overlay of sine wave, suppose that the weighted factor of each array element is respectively shown in formula [3]:
Wherein, B
n, φ
nExpression n array element pumping signal is amplitude, the phase place of input electrical signal, then shown in formula [4]:
As seen, select different B
n, φ
nTo change the corresponding angle of vertical direction wave beam and shape, so can select suitable vertical direction beam shape and direction as vertical direction broadcast beam field pattern by changing the weights that each array element pumping signal is input electrical signal (comprising amplitude, phase place), because broadcast beam will cover each portable terminal in all overlay areas, so choosing of weights must make beamwidth adapt to the overlay area.Smart antenna can be according to portable terminal arrival bearing and shape in application, get corresponding weights and be applied to ripple, vertical direction business beam field pattern as change, because this moment is only for a portable terminal direction, so corresponding weights must be smart antennas at the narrow beam of this direction.
The simulation model of the smart antenna that the embodiment of the invention provides sees also Fig. 8, wherein the N value is 4, the M value is 4, be the horizontal array element that smart antenna comprises four longitudinal arrangements, each array element is comprised of the oscillator of four perpendicular polarizations, wherein, the YOZ plane parallel is in ground, and the XOZ plane is perpendicular to ground.Simulation model based on smart antenna among Fig. 8, the wave beam field pattern simulation result in vertical direction of smart antenna sees also Fig. 9 and Figure 10, wherein Fig. 9 is smart antenna broadcast beam field pattern in vertical direction, and Figure 10 is smart antenna business beam field pattern in vertical direction.
The below introduces the horizontal direction wave beam field pattern of the smart antenna that the embodiment of the invention provides and realizes principle.
See also Figure 11, the stain among Figure 11 represents oscillator, is arranged on the horizontal linear.In case oscillator is fixed on the antenna-reflected plate, and the relative position between the oscillator namely immobilizes, the oscillator parallel operation forms the array element of a smart antenna in every delegation.
First oscillator of right side of bottom line is numbered 0, left serial number successively.As can be seen from Figure 11, electromagnetic wave (can be considered in the distance plane wave) is transmitted in it alignment distant place, arrive far field portable terminal (can regard a point as) on the spatial domain, in the array element each oscillator the distance of process different, take perpendicular to the direction on plane, layered transducer elements place as 0 degree direction, calculate clockwise the transmitted wave angle theta, each is numbered the oscillator transmitted wave and is respectively Δ dm with respect to the wave path-difference of No. 0 oscillator, wherein, m represents the oscillator numbering, m=0,1,2,3...M, and the spacing of establishing adjacent vibration generators is λ/2, therefore, see also formula [5]:
Wherein, concrete numerical computations is as follows:
No. 1 oscillator transmitted wave is with respect to the wave path-difference of No. 0 oscillator:
No. 2 oscillator transmitted waves are with respect to the wave path-difference of No. 0 oscillator: Δ d2=λ sin θ;
No. 3 oscillator transmitted waves are with respect to the wave path-difference of No. 0 oscillator:
M oscillator transmitted wave is with respect to the wave path-difference of No. 0 oscillator:
The phase difference of transmitted wave is on the time domain: Δ dm (2 π/λ), wherein m=0,1,2,3...M.As seen, the difference of distance has caused the difference of phase of output signal on each oscillator on the space.Wireless signal through whole smart antenna output after the weighting sees also formula [6]:
Wherein, A represents gain constant, s (t) expression complex envelope signal, W
mThe weighted factor of expression m oscillator, wherein m=0,1,2,3...M.According to the Overlay of sine wave, suppose that the weighted factor of each oscillator is respectively shown in formula [7]:
Wherein, φ
mExpression m oscillator pumping signal is the phase place of input electrical signal, then shown in formula [8]:
As seen, when being set, each oscillator in every delegation select different spacings can obtain wave path-differences different between oscillator, or by phase that to change each oscillator pumping signal be input electrical signal
m, will change angle corresponding to Z (t) and the shape of wave envelope.Utilize this principle, can when dispatching from the factory, make smart antenna the smart antenna that lateral angle is arranged in the horizontal direction, or be that the physical method of the phase place of input electrical signal changes the beamwidth on the horizontal direction by changing the oscillator pumping signal, in actual applications, can manual adjustments to adapt to concrete covering demand.The setting of oscillator and adjusting please refer to oscillator in the first row array element in other each row array elements setting and regulative mode, signal with all oscillators carries out with a merging at last, make whole smart antenna wave beam field pattern in the horizontal direction obtain setting and regulating, and in case determine namely no longer frequently to change.
Simulation model based on smart antenna among Fig. 8, the wave beam field pattern simulation result in the horizontal direction of smart antenna sees also Figure 12 and Figure 13, wherein Figure 12 is smart antenna broadcast beam field pattern in the horizontal direction, and Figure 10 is smart antenna business beam field pattern in the horizontal direction.Can find out, also keep in the horizontal direction wider coverage, be conducive to the covering to whole target high-rise.Owing to relate to business beam scanning, namely pumping signal is to change with portable terminal is different, so the wave beam field pattern on the horizontal direction has minor variations.
The below introduces the horizontal direction beamwidth of the smart antenna that the embodiment of the invention provides and adjusts principle.
By changing the phase place that each oscillator pumping signal is input electrical signal in the smart antenna, can change the synthetic signal strength intensity of whole smart antenna, change realization principle such as Figure 14 of the horizontal direction broadcast beam width of smart antenna, shown in Figure 15, for the subarray i (i=1 that is spaced (spacing is a d) M oscillator, 2, ..., N), feeding network is with subarray i (i=1,2 ..., all radiating elements N) go out phase difference Φ by phase shifter actuated in sequence from oscillator, can change each radiating element current feed phase, each radiating element composite signal realizes that namely the beamwidth on the horizontal direction of smart antenna broadens or narrows down.
In Figure 14, the phase difference Φ that successively decreases successively from middle oscillator (M/2-1, M/2+1) to the two ends oscillator can make smart antenna beamwidth in the horizontal direction broaden; In Figure 15, increase progressively successively phase difference Φ from middle oscillator (M/2-1, M/2+1) to the two ends oscillator, smart antenna beamwidth is in the horizontal direction narrowed down.
For Figure 14, smart antenna shown in Figure 15, j oscillator of each subarray encourages same phase place simultaneously, simulation requirements is higher simultaneously to a plurality of subarrays, and the horizontal direction wave beam regulating effect of a plurality of subarray smart antennas and reaching unanimity of single subarray smart antenna, so emulation adopts 8 molecular list array intelligent antennas that shake to carry out emulation in the present specification.As shown in figure 16, the list array intelligent antenna of M=8 is adjusted the pumping signal of each oscillator in the manner described above.Simulation result such as Figure 17, Figure 18 and shown in Figure 19.Can find out by simulation result, by adjusting the phase place of the pumping signal of each oscillator in the subarray, can play the effect that changes smart antenna beamwidth in the horizontal direction.When the phase difference Φ of employing mode one (Figure 14) pumping signal=15 are spent, can make the horizontal direction beamwidth of smart antenna widen into 60 degree, when the phase difference Φ of employing mode two (Figure 15) pumping signal=15 are spent, can make the horizontal direction beamwidth of smart antenna narrow to 25 degree.In the implementation, the value of phase difference Φ is generally greater than 0 degree less than or equal to 15 degree.
The smart antenna that the embodiment of the invention provides, a plurality of oscillators are arranged in the horizontal array element of composition on the horizontal linear, and with a plurality of horizontal array element longitudinal arrangements composition smart antennas, can realize the vertical scan direction of business beam, and be broad beam in the horizontal direction, thereby realized the good covering to high-rise, guaranteed the wireless telecommunications effect in the skyscraper close quarters.
The wave beam method of adjustment of the smart antenna that the embodiment of the invention provides, coverage in vertical direction is large and can adjust by the size and the phase place that change each array element pumping signal, coverage in the horizontal direction is large and can finely tune by the phase place that changes the pumping signal of oscillator in the array element, thereby can cover well the high-rise of different size and shapes.
The smart antenna that the embodiment of the invention provides and wave beam method of adjustment thereof, by the change to oscillator and array element structure, multirow array element is put from top to bottom, for covering the width adjusting that can obtain the vertical direction broadcast beam of adaptation high-rise building height by amplitude and the phase place of each array element pumping signal of change; For business, can the amplitude of each array element pumping signal and phase place be set according to professional arrival bearing and obtain business beam and go the ripple direction, thereby reach the effect that reduces interferences, raising capacity, reduction energy consumption.
The smart antenna that the embodiment of the invention provides and wave beam method of adjustment thereof, propose smart antenna and realized the method that the skyscraper close quarters covers, compare with traditional indoor distribution, multiple regulation technology is provided, requirement to the infield reduces, thereby reduces the engineering construction difficulty, saves man-hour, reduce simultaneously the requirement of reinforcing is installed, save material.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104749447A (en) * | 2013-12-31 | 2015-07-01 | 中国移动通信集团广东有限公司 | Method and device for estimating environmental electromagnetic radiation of base station |
| CN111130615A (en) * | 2018-10-30 | 2020-05-08 | 华为技术有限公司 | APT Subsystem and Space Vehicle Communication System |
| TWI696314B (en) * | 2016-07-06 | 2020-06-11 | 財團法人工業技術研究院 | Multi-beam phased antenna structure and controlling method thereof |
| CN112242611A (en) * | 2019-07-16 | 2021-01-19 | 深圳市威富通讯技术有限公司 | High-gain short-wave intelligent antenna equipment |
| CN112467346A (en) * | 2020-10-28 | 2021-03-09 | 武汉虹信科技发展有限责任公司 | Integrated dual-polarized ceiling antenna |
| CN114336091A (en) * | 2022-01-18 | 2022-04-12 | 新疆讯通网络工程有限公司 | A multi-system antenna device |
| CN115442817A (en) * | 2021-06-03 | 2022-12-06 | 中国移动通信集团四川有限公司 | Method, device and equipment for determining signal coverage mode |
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| CN109858101A (en) * | 2018-12-31 | 2019-06-07 | 北京航天测控技术有限公司 | A kind of distant code communication antenna emulation mode |
| CN115066807A (en) * | 2020-01-30 | 2022-09-16 | 哲库科技有限公司 | Antenna beamforming control with adaptive beam pattern |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104749447A (en) * | 2013-12-31 | 2015-07-01 | 中国移动通信集团广东有限公司 | Method and device for estimating environmental electromagnetic radiation of base station |
| CN104749447B (en) * | 2013-12-31 | 2018-02-02 | 中国移动通信集团广东有限公司 | A kind of evaluation method and device of the electromagnetic radiation from environment of base station |
| TWI696314B (en) * | 2016-07-06 | 2020-06-11 | 財團法人工業技術研究院 | Multi-beam phased antenna structure and controlling method thereof |
| US10700444B2 (en) | 2016-07-06 | 2020-06-30 | Industrial Technology Research Institute | Multi-beam phased antenna structure and controlling method thereof |
| CN111130615A (en) * | 2018-10-30 | 2020-05-08 | 华为技术有限公司 | APT Subsystem and Space Vehicle Communication System |
| US11387903B2 (en) | 2018-10-30 | 2022-07-12 | Huawei Technologies Co., Ltd. | APT subsystem and spacecraft communications system |
| CN112242611A (en) * | 2019-07-16 | 2021-01-19 | 深圳市威富通讯技术有限公司 | High-gain short-wave intelligent antenna equipment |
| CN112467346A (en) * | 2020-10-28 | 2021-03-09 | 武汉虹信科技发展有限责任公司 | Integrated dual-polarized ceiling antenna |
| CN112467346B (en) * | 2020-10-28 | 2022-07-19 | 武汉虹信科技发展有限责任公司 | Integrated dual-polarized ceiling antenna |
| CN115442817A (en) * | 2021-06-03 | 2022-12-06 | 中国移动通信集团四川有限公司 | Method, device and equipment for determining signal coverage mode |
| CN115442817B (en) * | 2021-06-03 | 2024-10-15 | 中国移动通信集团四川有限公司 | Method, device and equipment for determining signal coverage mode |
| CN114336091A (en) * | 2022-01-18 | 2022-04-12 | 新疆讯通网络工程有限公司 | A multi-system antenna device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013053333A1 (en) | 2013-04-18 |
| CN103052084B (en) | 2015-05-20 |
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